Hot deformation and processing maps of an Fe3Al intermetallic alloy

Processing maps for hot working of FeAl-based alloy

“…This finding agrees with the results obtained by Prasad et al [5,6] for an alloy with similar chemical composition but considerably smaller grain size (w12 mm), where deformation at temperatures >1000 C and at strain rates lower than 10 À1 s À1 resulted in the occurrence of superplastic deformation. In our case, the larger grain size enables observation of the coarse-grained superplasticity found earlier in coarse-grained Fe 3 Al and FeAl iron aluminides [5][6][7][8].…”

“…[4]. This approach is successful in optimizing the processing conditions of a number of commercial alloys as well as iron aluminides [4][5][6][7][8].…”

Effect of the strain on the deformation behavior of isothermally compressed Ti–6Al–4V alloy

“…Balasubrahmanyam and Prasad [5] studied the deformation behavior of Ti-10V-4.5Fe-1.5Al alloy (a kind of ␤ type titanium alloys) and optimized the processing parameters through processing map. Łyszkowski and Bystrzycki [6] established the processing map of Fe 3 Al intermetallic alloy and obtained the instability domains of plastic deformation. Cai et al [7] developed the processing map for a Ni-based superalloy and pointed out that the strain had a slight effect on the processing map.…”

Determining Hot Deformation Behavior of an Advance High Strength Steel (AHSS) by Means of Dynamic Processing Maps

“…19) In this situation, the calculation of the processing map may fail since negative values do not satisfactorily enter in the solution due to the numerical approach of the model which accounts for the calculation of the natural logarithm of m. There are some papers [18][19][20][21] that reflect on cases whereby m ≤ 0. Other studies [4][5][6][7][8][9][11][12][13][14][15][16][17][22][23][24][25] which focus mainly on the development of processing maps, do not discuss about cases whereby m ≤ 0, even when significant oscillations have been identified in the stress-strain curves. 8,12,23,25) The aim of the current investigation is to determine the critical domains where plastic flow may be stable or "safe" during hot deformation of a DP steel by means of a dynamic processing map.…”